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Abstract

Effect of gradual substitution of altered basalt by a few percent of cement dust (0, 5, 10, and wt.15%) on the ceramic properties of basalt-de-aluminated kaolin fired up to 1100ºC was studied. The results show that the samples containing 5 and 10 wt% cement dust give the higher suitable ceramic properties than the other samples. As the cement dust contents increases in the sample the apparent porosity enhances and the bulk density decreases at all temperature. Also, The XRD results reveal that the peaks of plagioclase and pyroxene of the altered basalt completely disappears in the sample containing cement dust and the intensity peaks of diopside sharply increase with cement dust content and firing temperature.